EV Registrations by Model Year (Plotly)
This line chart tracks the growth of electric vehicle registrations over time, showing accelerating adoption rates since 2015 as battery technology improved and more models became available.
Top Cities with Most EVs (Plotly)
West Coast cities dominate EV adoption, likely due to favorable climate for battery performance, state incentives, and higher concentration of charging infrastructure.
EV Count by Make (Plotly)
Tesla's first-mover advantage remains dominant, followed closely by Volvo in premium EV segments. The growing 'Other' category (now representing 28% of the market) signals healthy industry diversification beyond early leaders.
Nissan maintains strong positioning through the Leaf's affordability, while Volvo's rapid ascent reflects successful electrification of their luxury lineup. This breakdown reveals three distinct market tiers:
- Market Leaders (Tesla, Volvo) - Premium/long-range focus
- Mass Market (Nissan, Chevrolet) - Affordable entry points
- Emerging Brands - 14 manufacturers comprising the 'Other' segment
Popular EV Models (D3.js Radial Chart)
Model popularity reveals consumer priorities shifting in real-time. Early leaders like the Nissan Leaf succeeded by being affordable and 'good enough,' while today's top models combine 300+ mile ranges with tech-forward features. The radial format highlights an important market dynamic - the top 3 models capture nearly half the market, yet the long tail shows more model diversity than the ICE vehicle market. This suggests EVs are simultaneously consolidating around winners while enabling more niche vehicles than ever before.
EV Range vs Model Year (D3.js)
Interactive bubble chart showing how electric ranges have improved over time, with bubble size representing charging station availability in each vehicle's area.
EV Type Popularity Over Time (D3.js)
Streamgraph visualization showing Battery Electric Vehicles (BEVs) gaining market share over Plug-in Hybrids (PHEVs) as range anxiety decreases.
The BEV/PHEV tug-of-war tells a deeper story about consumer psychology. PHEVs initially dominated as a 'transition technology,' but their decline began when BEVs crossed 250 miles of range - the point where most consumers stop considering range limitations. The recent stabilization suggests PHEVs will persist for specific use cases (like rural drivers) rather than disappear completely.
EV Stations by Location (Plotly Mapbox)
Geographical distribution shows charging stations concentrated in urban areas and along major highways, with color coding revealing regional brand preferences.
EV Registrations by District (Plotly)
Districts with strong EV adoption often correlate with areas offering state incentives, HOV lane access for EVs, and higher average incomes.
EV Count by Make and District (Vega-Lite)
Treemap visualization showing which manufacturers dominate specific legislative districts, with Tesla maintaining strong presence across most regions.
Charging Infrastructure Balance (D3.js Dot Chart)
This visualization compares the number of EVs versus charging stations in different ZIP codes. Green bars indicate areas with sufficient charging infrastructure (more stations than EVs), while red bars show areas where charging infrastructure may be inadequate (more EVs than stations). The length of each bar represents the difference between stations and EVs.
Electric Range Distribution (Plotly)
Most EVs cluster in the 100-250 mile range, with premium models forming a secondary peak around 300+ miles - covering typical daily needs with margin.
Range vs Model Year (Plotly)
Clear upward trajectory in ranges across all manufacturers, with Tesla maintaining an advantage and brands showing distinct range strategies.
Alternative Correlation Matrix (Vega-Lite)
Interactive version of the correlation matrix with tooltips and different visual encoding options.
Range vs Charging Stations (D3.js)
D3.js implementation showing only weak relationship between vehicle range and local charging infrastructure density.